From 3bcb05b9b7100688ab166591b02bad1415ba7baf Mon Sep 17 00:00:00 2001
From: "Soni L." <EnderMoneyMod@gmail.com>
Date: Thu, 17 Oct 2024 14:46:34 -0300
Subject: [PATCH] type.h: Introduce ExnRef (#2489)

---
 include/wabt/type.h       | 6 +++++-
 src/interp/interp-util.cc | 3 +++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/include/wabt/type.h b/include/wabt/type.h
index 96fcf94588..c270624c81 100644
--- a/include/wabt/type.h
+++ b/include/wabt/type.h
@@ -42,6 +42,7 @@ class Type {
     V128 = -0x05,       // 0x7b
     I8 = -0x06,         // 0x7a  : packed-type only, used in gc and as v128 lane
     I16 = -0x07,        // 0x79  : packed-type only, used in gc and as v128 lane
+    ExnRef = -0x0c,     // 0x74
     FuncRef = -0x10,    // 0x70
     ExternRef = -0x11,  // 0x6f
     Reference = -0x15,  // 0x6b
@@ -68,7 +69,7 @@ class Type {
 
   bool IsRef() const {
     return enum_ == Type::ExternRef || enum_ == Type::FuncRef ||
-           enum_ == Type::Reference;
+           enum_ == Type::Reference || enum_ == Type::ExnRef;
   }
 
   bool IsReferenceWithIndex() const { return enum_ == Type::Reference; }
@@ -87,6 +88,7 @@ class Type {
       case Type::V128:      return "v128";
       case Type::I8:        return "i8";
       case Type::I16:       return "i16";
+      case Type::ExnRef:    return "exnref";
       case Type::FuncRef:   return "funcref";
       case Type::Func:      return "func";
       case Type::Void:      return "void";
@@ -103,6 +105,7 @@ class Type {
     switch (enum_) {
       case Type::FuncRef:   return "func";
       case Type::ExternRef: return "extern";
+      case Type::ExnRef:    return "exn";
       case Type::Struct:    return "struct";
       case Type::Array:     return "array";
       default:              return "<invalid>";
@@ -145,6 +148,7 @@ class Type {
       case Type::F64:
       case Type::V128:
       case Type::FuncRef:
+      case Type::ExnRef:
       case Type::ExternRef:
       case Type::Reference:
         return TypeVector(this, this + 1);
diff --git a/src/interp/interp-util.cc b/src/interp/interp-util.cc
index 5267f4ae2a..fcba2c7f1a 100644
--- a/src/interp/interp-util.cc
+++ b/src/interp/interp-util.cc
@@ -55,6 +55,9 @@ std::string TypedValueToString(const TypedValue& tv) {
     case Type::ExternRef:
       return StringPrintf("externref:%" PRIzd, tv.value.Get<Ref>().index);
 
+    case Type::ExnRef:
+      return StringPrintf("exnref:%" PRIzd, tv.value.Get<Ref>().index);
+
     case Type::Reference:
     case Type::Func:
     case Type::Struct: